A report warns up to 16,000 jobs would be lost overall if Holden were to shut its plant at Elizabeth in northern Adelaide.

The South Australian Government commissioned the report to evaluate Holden's contribution to the local economy.

Premier Jay Weatherill tabled the report in State Parliament, painting a grim outlook for South Australia without the car maker's presence.

"The closure of Holden would, it has been estimated, cause the loss of between 6,000 and 16,000 jobs in the state, reduced the value of economic activity by between $0.5 billion and $1.5 billion and a decline in state taxation revenue of between $25 million and $83 million," he said.

Holden is negotiating to get more money from both the SA and Federal Governments to support its operations.

Mr Weatherill says the economic benefit of Holden to the SA economy is crystal clear and the car maker will be supported.

"There will be co-investment from the Government to continue car making in this state," he said.

"We have received Holden's final submission. Following consideration by Government the proposal will be considered by the board of GM (General Motors) in Detroit. The Government will provide more information once the proposal has been considered by the board."